Form fob concrete construction



gept. 4, 1923. I

. c. w. HAYWARD- .FORM FOR CONCRETE cousmuonou Filed Oct. 28. 19 22 2 Sheets-Sheet 1 INVENTOR ward. $2M

' A NORA/78 Sept. 4, 1923.

1,466.83) C. W. HAYWARD I FORM FOR CONCRETE CONSTRUCTION Filed Oct. 28. 1922 2 Sheets-Shoot. 2

WITNESSES IN l/EN TOR A TTORNEYS FLZQWAXQ Patented Sept. 4, 1923.

PATENT OFFICE;

cnnnnns w. HAYWARD, OFSANTA BARBARA, CALIFORNIA.

FORM FOR CONCRETE CONSTRUCTION.

Application filed October 28, 1922. Serial No. 597,607,

walls to provide a hollow form construction of boards, the interior dimensions'o-t the form being equal to the dimension of the wall. Concrete is poured into this form, tamped, and then permitted to set. After a period, this form, which requires the use of a great deal of lumber and a considerable loss of time in its construction, is torn down.

It is an object of my invention to provide a device whichwill require very little lumber and time for its setting and which will furnish a form for continuously constructing a concrete wall whether hollow or solid and in which the wall may be progressively ad vanced in height by the repeated application of the given number of boards throughout various stages in the building of said wall;

A further object 01": my invention is the provision of a device for supporting a certain number of boards in spaced'relation with the space between the boards being adapted to be filled with concrete to torma certain height of a wall whereby the supporting'means and the boards may be removed and again spaced above the completed portion of the wall to provide a form in which more concrete is adapted to be poured for completing a second portion or the height. These operationsmay be continued until the wall is complete. 1

Another object of'the invention is the'provision of a device for supporting boards in position to furnish a form fora concrete mixture and which device may be readily removed from its supporting position and is further adjustable to support boards in various spaced relation to build walls of different thicknesses.

, v Other objects and advantages will be apparent during the course of the following description.

The invention is illustrated by way of example in the accompanying drawings, in which,

Figure 1 is a View in perspective of a form composed of a number of boards supported in spaced relation by my improved clamp.

Figure 2 is a side elevation of my clamp shown as supporting a pluralityot' boards in spaced relation.

Figure 3 is a side elevation of the clamp constructed in accordancewith my invention for supporting boards in spaced relation at the opposite sides of a partly finished wall with an auxiliary clamp for supporting boards to form an air space within the wall.

Figure at is a view in perspective of the intermediate clamp for forming the air space.

Figure5 is a fragmentary view in perspective disclosing the means for holding the legs of the clamp in a predetermined position.

Referring to the drawings, 1, 2 and 3 designate boards whichare adapted to be spaced in vertical alinement with the opposite longitudinal side edges of the board 2 in engagement with vthe longitudinalside edge of the boards 1 and 3; A similar number of boards 4, 5 and 6 are spaced from these boards and mounted in vertical alinement and similarly to the positioning of the boards 1, 2 and 3'. These boards are maintained in position by means of a plurality of clamping devices. Each clamp is provided with a leg 7 having its inner edge engaged with the outer surface of the alined boards 1,-2and 3,

and a-movable leg 8 having its inner edge in engagement with the outer surface of the alined=boards 4:, 5 and 6.

A pair others 9 and 10 spaced by the legs 7 and 8 are adapted to have their outer ends secured to the leg 7 by means of the bolts '11 so that said bars have no movement relative -to the leg 7. The other ends of the bars are and the leg 8 whereby the leg 8 is movaole on the pivot bolt 13 relative to said bars. The perforations 12 are provided for spacing the legs 7 and S variously from each other to permit more or less spacing of the series oi. boards 1, 2, 3, and i, 5, 6, wherebv greater widths of walls may be constructed.

A pair of bars 14 and 1.5 are pivotally mounted on the bolt 16 which passes through one of the pertorations l7 and 1%, respectively, ot the bars 14L and 15 when alined with a perforation in the upper end of the Pivot-ally mounted on the bolt 26 and be tween the inner ends of the bars 20 and i5 is a link 27 having at its inner end a toe adapted to engage a notch 29 "formed on the inner edge ot the leg 7. A lever 30 pivolallv mounted on a bolt 81 which passes through the leg 7. .1 pin 32 is adapted to-be inserted through a perforation in the lever 30 and the leg 7 for locking the lever in position wnen the toe 28 of the link 2? located within the notch 29 and when the legs 7 and 8 are maintained in parallel position for supporting the spaced boards 3 and a. 5, 6. Temporary braces 33 are adapted to inaintain the boards iii-spaced. relation when the space between the boards being iilled with concrete. The braces are afterwards renoved at. the proper time.

In the operation of the device tor maintaining the boards in spaced relation. the lever 30 is moved BIOIH the direction indi cated by the arrow in Figure 2 to the position indicated in dotted lines when the inner end of the pair ot' bars 2O. 21 and ll. 15 are moved downwardly and the toe 28 of the link 2? shifted from disengagement with the notch 2a and the 7. Since the outer ends ot the bars 9 and 10 are rigidly connected with the leg 7 by means of the bolts it and the leg 8 is pivotalh; mounted on the bola 13 passing through the bars 9 and i0, the lower end of the leg 8 will be n'ioved outwardly to the position showl in dotted lines in Figure 2. while the leg 7 rema'ns immovable as the lever 30 is moved in the direction indicated by the arrow. The spread-apart position of the lens and S will permit the boards 1, 2 and 1:, 5. (3 to be inserted in position for building the wall. A reversal of the direction of movement of the lever 30 naeaeeo engage the notch 29 and lock the legs 7 and 8 in a parallel position for supporting the boards in spaced relation.

As shown in Figure where a portion of the-wall has been completed the pair of lower boards 1 and l are first positioned adjacent the upper side edges of the partly completed wall. The clampi f device so posit med that the will s raddle these boards in the wall. The lever 30 is oscillated to move the S inwardly toward the wall and thereby draw both legs up tight against the boards 1 and land wedge the same in holding position a; llHSi the wall. As shown in Figure 1 a number of these clamps are located in supported relation with the various boards and spaced from each other along the length of said boards.

Any number boards may be employed with the clamps, but I prefer for convenience in use the three boards. These clamps may be constructed of any material suitable for the purpose, but as shown, the ditl'erent parts of the device are made of wood.

In order to build a concrete wall which is hollow as shown in Figure 3, it necessary to employ an auxiliary clamping means tor supporting boards in spaced relation cen trally of the spaced boards 1, 2, 3 and at, 53. G. For t iis purpose I ample a clamp constructed ot a pair of 'l' irons and 35 having heads 36 which are adapted to he positioned against the inner side ot the boards 3?, 3S and 39, 40. A link 41 h King pivotal connection adjacent its ends-with the members and at one end of the said members and a lever having pivotal connection adjacent an end of said members are adapted to maintain the members and 35 always in a parallel position. The oscillation of the lever 42 would tend to move the T-shapml members towards or away "from each other. A nortion ot the head of the T-shaped member 35 is cut away as shown at l?) to permit the lever 4:2 to be placed in ta e to taco cnagement with the tlane'e ll of the member 35. A. linl; pivotally connected at one end to the member and at its other end to the lever i2 is adapter. to lock the lever 42 in position for maintaining the T-shaped members 34: and predeteiniinedly spaced from each other or supporting the boards 3'7. 38 and 3 4-0 from each other and centrally between the legs 7 and 9 ot the firstmentioned clamping member. The T-Slimriltl member 3% is cut away at 4:6 in order that the flange 4:? of said member will be able to engage the bar 9 in face to "face engagement while the pin 218 which connects the link to the flange e? of the T-shaped member .34. likewise pivotally connects the l -shaped member to the transverse bar 9.

A chain 429 connect d to the vided with a hook adapted to engag the bar 9 in order to prevent the clamping member comprising the T-shaped members 3a and 35 from being lost within the space 51 of the hollow wall 52 when said clamping member is accidentallydisengaged from its position and falls within the space 51. Reinforcing rods 53 are disposed transversely of the wall 52 with a portion as shown extending across the space 51. v

It will be noted that the perforations formed in the parallel bars 9 and 10, which are formed adjacent the leg 8, provide for spacing the legs 7 and 8 at a greater distance apart to form walls of various-widths. The perforations formed in the outer ends of the pairs of bars 14, 15 and 20, 21 are "for a similar purpose.- The positioning of the S farther away from the leg 7 by means of locating the bolts passing through the leg 8 in perforations close to the ends of the bars 9, 10 and 14:, 15 will not effect the position or adjustment of the lever and the link 27 since these members, have their pivotal connections located within a certain relative position with respect to the leg 7. The link is provided with a plurality of perforations whereby by positioning the bolt which connects the link to the lever 42 in any one of these perforations the T-shaped members 34c and 35 will be held in various spaced relations so that diiierent widths of air spaces may be formed within a wall when this clamping member is employed in connection with a clamping member tor supporting boards adapted to form the outer faces of the wall.

The clamping member which has the fixed leg 7 and the movable leg 8 may be employed for constructing the air passage in hollow walls instead of using the clamp provided with T-shaped members. In this case the bars 9 and 10 will be mounted at the ends at the legs 7 and 8 in place of the bars 1.4;, 15 and 20, 21, while these last-mentioned. bars will have their pivotal connections at a point where the bars 9 and 10 were formerly pivoted.

0t necessity the lever 30 and the link27 will assume positions in accordance with the new positions of the bars 14:, 15 and 20, 21. l 7

hat I claim is:

1. In a device otthe character described, a leg provided with a notch, a pair of bars rigidly connected at an end to an intermediate portion of the leg, a movable pivotallv mountedintermediate its ends beson the air of bars and ad" ea the other end of said bars, a pair of pivotally mounted at the upper end i'i't each with the inner ends of the last mentioned bars nivotally connected to one end of a link, said link provided with a wedge-shaped end adapted to engage the notch on the first mentioned leg, a lever pivotally mounted on said leg and pivotally connected with an intermediate portion of the'link, said lever adapted when oscillated to oscillate the link and-pairs of the second mentioned bars to lock the movable leg to clamping and unclamping position relative to an object, with the link being moved into and out of engagement with the notch in the fixed leg.

2. In a device of the character described, a leg provided with a. notch, transverse bars rigidly connected with theleg, a movable leg pivotally connected with the bars and spaced from the first leg, and adjustable means connecting theupper ends of the legs, a link pivotally connected with the adjust able means and engageable with the notch, a lever pivoted on the first leg and having pivotal connections with the link for moving the link into engagement or out of engagement with the notch and for moving the lower end of the pivoted leg to or away from the first leg, in order that when the link is engaged with the notch, the movable leg will be locked in parallel relation with the first leg.

3. In a device of the class described comprising a leg, a movable leg spaced from the first leg, means connecting said legs intermediate their ends and providing a pivotal mounting for the movable leg, operating means for oscillating the movable leg, and means connected with the operating means for locking the legs in parallel rela tion, clamping means pivotally mounted upon the connecting means between the legs and depending therefrom, and cooperating with the legs of the first mentioned clamping means for maintaining pairs of timbers spaced from each other with the inner members of the spaced timbers spaced from each other. i

4. In a device of the class described, a leg provided with a notch, transverse bars rigidly connected with the leg, a movable leg pivotally connected with the bars and spaced from the first leg, and adjustable means pivotally connecting the upper ends ofthe legs, a link pivotally connected with the adjustable means and engageable with the leg for locking the legs inparallel relation, a lever pivoted n the leg and having pivotal connection with the linkfor moving the link into locked or unlockedv position with the first leg and causing oscillation of the movable leg through the link and the adjustable con- 'necting means for the upper ends of the legs,

a T-shaped member pivotally mounted be tween the legs and upon the transverse bars, asecoud T-shaped member, a link pivotally connecting the lower ends of the T-shaped members together, a lever pivotally connecting the upper ends of the T-shaped members andfor moving the second T-shaped member relative to the first T-shaped member and in parallel relation whereby said T-shaped members are caused to approach or move away from each other, and e linl: pivotally connecting the lever with the first mentioned T-shaped mei iber for locking; the lever in position and simultan ously locking the pair o't T-shaped members in a fixed position relative to each other.

In a device of the class described comprising e leg a movable leg sgaced "from the first leg, teens connecting said legs inerniediete their ends and providing a pivotal n'iounting for the movable leg, links nivotall y eonnevted to the upper end of the legs, it looking member having pivotal eonneetions at one end with the free ends of the links, an operating lever pivotelly mounted on the first mentioned leg with one of its free ends pivoted to the locking member intermediate its ends, the first mentioned leg being provided with a notch adapted to be en ed by the free end of the locking member for locking" the legs in parallel relation, operation of the lever being adapted to lit the locking member out of engagement with the notch and s *ing the free end of the movable leg out of parallel relation with the first mentioned lee.

' CHAPLES N. HAYWARD. 

